Carriage-spring



G. H. LAUB.

jGarriage-Spring-.

No' 292605 Patented Aug 14, 1860.

UNITED STATES PATENT OFFICE.

G. H. LAUB, OF NEWARK, MISSOURI.

CARRIAGE-SPRING'.

Specification of Letters Patent No. 29,605, dated August 14, 1860.

To all 'whom it may concern:

Be it known that I, G. H. LAUB, of Newark, in the county of Knox andState of Missouri, have invented a new and useful Improvement inCarriage-Springs; and I do hereby declare that the following is a fulland exact description thereof, reference being had to the accompanyingdrawings and to the letters of reference marked thereon.

The nature of the invention consists in the arrangement and combinationof compound flat and curved springs with curved lever arms controlled bysegment gear, and a spiral spring in manner hereinafter described.

IVith reference to the accompanying drawings, which comprise aperspective representation of my improvement, an axle, &c., illustratingits application, E, is an axle.

O, are a pair of curved leaf springs and B, a stand whichis boltedtogether with springs C, to the axle E. The stand B, is furnished withthe ears I, between which are tted the curved portion of arms A1. Onthis curved part of the arms is formed gear teeth meshing into eachother, the teeth onfthe one arm meshing into and cont-rolling themovement of those on the other. These gear teeth are arranged on thecurve of a circle whose center is in the center or axis of pins F, thesepins pass through the ears I, of stand B, and the protuberances J,formed upon arms A1 to receive them so jointing said arms A1, to thestand B. The lower ends of arms A1, are connected to the springs C, bymeans of the links D, while from one to the other of these arms abovetheir connection with stand B, is stretched and secured to each thespring K.

G, represents the points of connection to the carriage bed or otherintermediate connections.

It is to be remarked that the invention here is not confined to a singlespring, nor to a pair of springs operating together in one direction;except when such pair of springs is controlled and regulated by othermechanism. Thus, the two flat curved springs C, C, operate together onthe lower part of arms A1 by means of links, D; but the intermeshingcogs or gear teeth on the contiguous parts of said arms, so regulate andcontrol the action of the arms that a movement of the arm of one sidewill produce a corresponding movement of the arm on the other side. But,suppose the whole controlling action were to be left on the cogs, it isquite certain that any sudden or violent movement on the one hand, or aheavy laden carriage and rough road on the other, might give rise tobreaking of the cog teeth from sudden strain thrown upon the teeth. Toobviate these inconveniences I have added a further controlling agency,namely the spiral spring K, arranged horizontally on a line with the topof the arms A. The parts of the devices which are involved in thisinvention are therefore the flat compound springs C, O, the'segment gearteeth in arms A1, A1, and the controlling spiral spring K.

The effect of my improvement; as it will be observed by reference to thedrawing, is that any pressure applied at either point Gr, is transmittedequally to all the several springs, or at least to the springs O, thespring K, bearing its due proportion, and whatever deflection occurs atthe one point G, must occur equally at the other point Gr, by reason ofits effect being transmitted through the segment gears on arms A1 fromone arm to the other, thus securing in all cases the proper horizontalposition of the carriage bed notwithstanding the load or pressure may beall on one side thereof.

A spring may be formed on the lower end of arm A1, and the link D,attached thereto, in which case a rigid fixture may take the place ofspring C, and the link D, be attached thereto instead. The part-s may bemade of any suitable materials.

Having described the construction and operation of my improvement what Iclaim as new, and desire to secure by Letters Patent, is as follows:

The arrangement and combination of iiat curved springs C, C, and arms A,A1, when said arms are controlled by the segment gear on the contiguousportion of said arms, and by the action of spiral spring K, as describedand represented.

In testimony of which invention I have hereunto set my hand in presenceof witnesses.

G. I-I. LAUB.

Witnesses:

I-I. E. CLIFTON, D. N. B. OorrIN, Jr.

